Mitsubishi LANCER EVOLUTION-VII 2001 Technical Information Manual page 68

The terminals of the 4WD-ECU are arranged as follows.
1. Proportional valve <ACD>
2. -
3. Proportional valve <AYC>*
4. -
5. -
6. Wheel speed sensor <FL>
7. Wheel speed sensor <RR>
8. Wheel speed sensor <RL>
9. Wheel speed sensor <FR>
10. Pressure sensor earth
11. Lateral G sensor
12. -
13. 4WD-ECU power supply
14. Directional valve <Right>*
15. Directional valve <Left>*
16. Electric pump relay power supply
17. -
18. -
19. Wheel speed sensor earth <FL>*
20. Wheel speed sensor earth <RR>*
21. Wheel speed sensor earth <RL>*
22. Wheel speed sensor earth <FR>*
23. Longitudinal G sensor
24. Longitudinal G sensor and lateral
G sensor earth *
NOTE
1
1. * indicates that the terminal is omitted if only ACD is equipped.
2
2. * indicates that the terminal is added if only ACD is equipped.
DIAGNOSIS ITEMS
Code Diagnosis Item
No.
12 Power supply
(Valve power supply)
13 Fail save relay
21 Wheel speed
<FR>
22 Wheel speed sensor <FL>
23 Wheel speed
<RR>
24 Wheel speed
<RL>
25
Wheel speed sensor p
26
31 Steering wheel sensor
POWER TRAIN - ACD and AYC
1
1
1
2
2
2
2
2
Mode indica-
tor lamp (f: all
lit, – : normally
displayed)
voltage
f
f
sensor
f
f
sensor
f
sensor
f
-
f
f
25. -
26. ECU earth
31. ECU backup power supply
32. Pressure sensor
33. Steering wheel sensor <ST-1>
34. Steering wheel sensor <ST-2>
35. Diagnosis data input/output
36. Idle switch
37. Parking brake switch
38. Stop lamp switch
39. TPS
40. ACD mode indicator lamp <TARMAC>
41. -
42. ECU earth
43. Pressure sensor power supply
44. Steering wheel sensor <ST-N>
45. -
46. Diagnostic control
47. ACD mode switch
48. -
49. ABS monitor *
50. Earth*
51. ACD mode indicator lamp <SNOW>
52. ACD mode indicator lamp <GRAVEL>
Main diagnosis details
Open-circuit, short-circuit of power supply voltage system, or
drop in voltage
Open-circuit or short-circuit of ECU equipped fail save relay
Open-circuit or short-circuit of wheel speed sensor <FR>
system
Open-circuit or short-circuit of wheel speed sensor <FL>
system
Open-circuit or short-circuit of wheel speed sensor <RR>
system
Open-circuit or short-circuit of wheel speed sensor <RL>
system
Equipped with step-bore tire
Wheel speed sensor defect
Steering wheel sensor <ST-N,ST-1,ST-2> system
opened or short-circuit
2-23
1
2